The ZyWALL USG 20W series is a high-performance, deep packet inspection anti-spam features in one box. The multi-layered security safeguards your organization's customers and company records, intellectual property as well as critical resources from external and internal threats. The ZyWALL USG (Unified Security Gateway) 20W provides great performance protection as well as a deep packet inspection security solution for small businesses to enterprises alike. It embodies a Stateful Packet Inspection (SPI) firewall, content filtering, anti-spam, and VPN (IPSec/SSL) in one box.

The ZyWALL USG 100 is a high performance, deep packet inspection security platform for small to medium sized offices. It embodies a firewall, Intrusion Detection and Prevention (IDP), content filtering, anti-virus, anti-spam, and VPN in one box. This multi-layered security safeguards your organization's customer and company records, intellectual property, and critical resources from external and internal threats. Its fanless design allows noiseless heat dissipation, making it perfect for your desk.